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Nathan E. Egge authored
When building with --enable-daala_ec, calls to aom_write_tree() and aom_read_tree() will convert a aom_tree_index structure with associated aom_prob probabilities into a CDF on the fly for use with the od_ec_encode_cdf_q15(). The number of symbols in the CDF is capped at 16, and trees that contain more than 16 leaf nodes are handled by splitting the most likely, e.g., highest probability symbols, first and coding multiple symbols if necessary. ntt-short-1: MEDIUM (%) HIGH (%) PSNR 0.000227 0.000213 PSNRHVS 0.000215 0.000205 SSIM 0.000229 0.000209 FASTSSIM 0.000229 0.000214 subset1: RATE (%) DSNR (dB) PSNR -0.00026 0.00002 PSNRHVS -0.00026 0.00002 SSIM -0.00026 0.00001 FASTSSIM -0.00026 0.00001 Change-Id: Icb1a8cb854fd81fdd88fbe4bc6761c7eb4757dfe
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